Automatic drainage valve and its application to various forms of radiators



Oct. 7 i

. c. c. PECK AUTQMATIC DRAINAGE VALVE AND ITS APPLICATION TO VARIOUS FORMS CF RADIAT QRS Filed Dec; 29 1919 INVENTOA WITNESSES:

Oct. 7, 1924. 1,510,860

' C. C. PECK AUTOMATIC DRAINAGE VALVE AND ITS APPLICATION 1'0 VARIOUS FORMS OF RADIATORS Filed Dec. 29 1919 3 Sheets-Sheet 3 INVENTOR I WmM WITNESSES Oct. 7, 1924. 1,510,860

C. C. PECK AUTOMATIC DRAINAGE VALVE AND ITS APPLICATION TO VARIOUS FORMS OF RADIATORS Filed Dec. 29 1919 3 Sheets-Sheet 3 WIT/V15 35$;

y I [N VLUVTOR Patented Oct. '7, 1924.

Unrrso s'rarss CASSIUS CARROLL PECK, or RoeHEs'rER, NEW YORK.

AUTOMATIC DRAINAGE VALVE AND ITS APPLICATION 1 RADIATORS.

T0 vARIoUs loans on Application filed December 29, 1919. Serial No. 348,247.

To all whom it may concern.

Be it known that I, GASSIUS CARROLL Pnon, a citizen of the United States, residing at Rochester, in the county of Monroe and State of New York, have invented a certain new and useful Automatic Drainage Valve and Its Application to Various Forms of Radiators, of which the following is a specification.

My invention relates to the class of valves that are especially adapted for use in draining steam radiators, but may with equal advantage be applied to other apparatus, such as the drying cylinders of paper machines and other steam using apparatus that requires to be constantly drained of water and air. The chief features of the valve as a drainage instrument are the constant passage of water and air, and also of some steam when water and air are not present, the latter not being in sufficient amount to involve waste. These features are embodied in my valve as shown and described in United States Patent Number 1 979,553, dated December 27th, 1910. In the present application the principle of operation is in no wise altered, and it is the more advantageous placing of the valve and screen parts in relation to the surface drained that. the present application seeks to cover.

In the accompanying drawings which con stitute a part of this application, Fig. 1 is a side elevation of the improved valve holder arrangement with attached screen. 7

Fig. 2 is an end elevation on line of X-X Fig. 1, showing the form and position of the internal parts of the valve and screen case.

Fig. 3 is a vertical central section of the operative parts of the valve and of the screen case as applied to an ordinary radiator.

Fig. 4: is a central. vertical section on an enlarged scale of the operative parts of the valve-the valve passage being somewhat differently constructed and arranged as oom pared with Fig. 3.

Fig. 5 is a side elevation of an ordinary pipe heating coil with branch T header 1nto which the pipes are screwed, as also the drainage valve with screen case; the pipe header having its body broken away sufficiently to show in elevation the said valve screwed into the header.

Fig. 6 is a side elevation of a return bend type of steam coil with an ordinary T fi ting at the return end, this T having its body broken away sufiiciently to show in elevation the drainagev valve as inserted therein.

Fig. 7 includes an end elevation and a side elevation of a pipe connection and of the screen frame'that holds the automatic discharge valve as these respective parts may be suitably connected into the drainage end of a steam radiator. Recesses c in the head of screen frame C are for inserting a tool to screw the frame into place.

Fig. 8 embraces a side elevation and end elevation of thevalve passage A of plug a, showing a slot 00 in the discharge end of the plug for insertion of a screw driver blade, or other tool, for conveniently screwing the plu into place.

or convenience in making the valve, it may sometimes be best to use the plug form a, shown in Figures 3 and 7, and. at other times to drill the valve passage in the solid end I) of the screen frame C, made about as shown in Figure 4:. The passage A is controlled by the check valve B. The pipe coupling fitting E is screwed into radiator F and holds screen frame G with its wire screen 0. Both are made of brass,'bro-nze, or

other suitable metal. Into fitting E any suitable form of return drip pipe, as G shown in broken lines in Flg. 8, maybe screwed, the form shown belng generally convenient for connecting to air heating" radiators by means of the union coupling g.

Figures 5 and 6 show clearly how the valve including the screen frame and screen can be conveniently attached to pipe coils.

The valve is intended for operation under diiferential pressure that may be either high or low, and either above or below atmospheric pressure so long as there is higher pressure in the radiator than in the pipe that it drains. Size of the valve passage is made to suit the amount of diiierence in pressure in a radiator and its drain which is one of the governing elements. The extent of condensing surface is the other element.

Vith the form of valve and screen and the arrangement in a radiator shown and described, this simple form of combined air and Water automatic drainage valve can be screwed into any cast iron or steel radiator,

or any pipe coil without expert assistance.

There is only one joint to make tight against leakage, and this is easily made in screwing the brass of the coupling piece E into the harder metal of radiator F.

The pocket formed by either a radiator or coil provides the important element in reliable operation of a large receiver for holding solid matter carried along by water of condensation, and this conjointly with the wire screen pretty fully insures against stoppage of the valve passage A. Years of experience have shown that this passage seldom becomes clogged, as any solid matter that getspast the wire screen is drawn through said passage by the current of water, air and steam.

The valve passage plug a, as shown in Figures 1 and 8, permits making the screen frame C in one brass or other metal casting, while the'construction shown in Fig. 4: requires a separate head. opposite to the valve in order to machine the recess (Z to facilitate flow of liquid and avoid making the valve passage A of objectionable length.

As the coupling piece E has no effect on the valve action, it is evident that said piece serves as convenient means of connecting the screen frame and valve container C with a drain pipe, as G, but is not an indispensable part of the invention, since screen frame C could be separately screwed into a radiator, as shown in Figure 7 which is lettered to indicate the several parts shown in the other figures.

I do not confine myself to the exact form and manner of assembling the several parts of the valve so long as proportion and relation of parts to each other are such as to correspond with those shown and described and are such as to give practically the same results. The term radiator as herein used is intended to include any form of radiator, or

pipe coil, or cylinder for heating or drying that is used for condensing steam.

hat I claim as my invention and desire to secure by Letters Patent is,

1. In a valve for the purposes set forth, a body comprising an externally threaded por tion provided with a port whose length is less than the length of the threaded portion, a valve member movably arranged on one side of the threaded portion to control the flow through said port, a screen frame projecting from the opposite side of said threaded portion, said frame being concentric with the threaded portion and having at its outer end a projection through which the threaded portion may be turned to effect attachment with a suitable support, and a screen surrounding said frame.

2. In combination with an internally threaded bushing adapted to be secured in the outlet of the radiator and to have the outlet pipe secured thereto, an externally threaded valve body secured in said bushing and provided with a surrounding shoulder cooperating with the inner end of the bush ing to form a tightjoint, said body being provided with a vent opening of such a diameter as to control the discharge of water, air and steam, and to maintain a desired differential pressure between the interior of a radiator and a return pipe, connected to the radiator, a valve member mounted on the body within the bushing to prevent back pressure to such radiator by way of such return pipe, the body also having at the inlet of said vent opening, a frame providing an enlarged chamber, and a screen surrounding said frame.

CASSIUS CARROLL PEOK. lVitnesses VVILFRED ARoNwrrs, ARTHUR R. ANDERSON. 

